Wireframe

Originally, Above the Fold referred to print newspapers, and described everything on the top half of the front page.

In website design, Above the Fold refers to any elements that are visible at the top of a webpage, usually the site’s homepage, without having to scroll down.

Optimizing the design of your homepage above the fold can be important to make a good first impression and clarify the intent of your website for the user. However, on some mobile-first or app-based sites, other considerations present themselves, since scrolling for the majority of a page’s content is more expected on these platforms.

A meta description is an HTML tag for a web page that describes the page briefly, summarizing it. 

Meta descriptions are read by search engines and often displayed for users. For example, the brief description for web pages you see in Google results is often pulled directly from the page’s meta description.

QR codes are barcode images that can be read by most mobile devices and will direct the user to a specific webpage. They’re often used to help track users of ads and to aid people in finding a web page related to an ad.